By using this site you agree to the use of cookies for analytics and personalized content. Find out more here

Leister Europe

Leister Amerikas

Leister Asia and Oceania

Leister Africa and Middle East

  • Albania | EN
  • Andorra | ES / FR / EN
  • Armenia | EN
  • Azerbaijan | EN
  • Belarus | EN
  • Belgium | NL / FR / EN
  • Bosnia - Herzegovina | EN
  • Bulgaria | EN
  • Croatia | EN / DE
  • Cyprus | EN
  • Czech Republic | EN / DE
  • Denmark | EN
  • Estonia | EN
  • Faeroe Islands | EN
  • Finland | EN
  • France | FR / EN / DE
  • Georgia | EN
  • Germany | DE / EN
  • Gibraltar | EN
  • United Kingdom | EN
  • Greece | EN
  • Hungary | EN / DE
  • Iceland | EN
  • Ireland | EN
  • Italy | IT / EN
  • Kosovo | EN
  • Latvia | EN
  • Lithuania | EN
  • Luxembourg | DE / FR / EN
  • Macedonia | EN
  • Malta | IT / EN
  • Moldova | EN
  • Monaco | FR / IT / EN
  • Montenegro | EN
  • Netherlands | NL / EN
  • Norway | EN
  • Austria | DE / EN
  • Poland | DE / EN
  • Portugal | EN / ES
  • Liechtenstein | DE
  • Romania | EN
  • Russia | EN
  • San Marino | IT / EN
  • Serbia | EN
  • Slovakia | EN / DE
  • Slovenia | EN / DE
  • Spain | ES / EN
  • Sweden | EN
  • Switzerland | DE / FR / IT / EN
  • Turkey | EN
  • Ukraine | EN
  • Vatican | IT / EN
  • Anguilla | EN
  • Antigua & Barbuda | EN
  • Argentinia | ES / EN / DE
  • Aruba | EN / NL / ES
  • Bahamas | EN
  • Barbados | EN
  • Belize | ES / EN
  • Bolivia | ES / EN
  • Brazil | EN / ES
  • Canada | EN / FR
  • Caribbean Netherlands | EN / NL
  • Cayman Islands | EN
  • Chile | ES / EN
  • Colombia | ES / EN
  • Costa Rica | ES / EN
  • Cuba | ES / EN
  • Curaçao | EN / NL
  • Turks & Caicos Islands | EN
  • Dominican Republic | ES / EN
  • Ecuador | ES / EN
  • El Salvador | ES / EN
  • Grenada | EN
  • Guadeloupe | EN / FR
  • Guatemala | ES / EN
  • Haiti | ES / EN
  • Honduras | ES / EN
  • Jamaica | EN
  • Martinique | EN / FR
  • Mexico | ES / EN
  • Montserrat | EN
  • Nicaragua | ES / EN
  • Panama | ES / EN
  • Peru | ES / EN
  • Puerto Rico | ES / EN / DE
  • Saint Barthélemy | EN / FR
  • Saint Kitts & Nevis | EN
  • Saint Lucia | EN
  • Saint Martin | EN / FR
  • Saint Vincent & Grenadines | EN
  • Sint Maarten | EN / NL
  • USA | EN / ES
  • Venezuela | ES / EN
  • Virgin Islands UK | EN
  • Virgin Islands US | EN
  • Australia | EN
  • Bangladesh | EN
  • Hong Kong SAR | ZH / EN
  • India | EN
  • Indonesia | EN
  • Japan | JA / EN
  • Kazakhstan | EN
  • Korea | EN
  • Kyrgyzstan | EN
  • Macao SAR | EN / ZH
  • Malaysia | EN
  • Mongolia | EN
  • Myanmar | EN
  • New Zealand | EN
  • Philippines | EN
  • PR China | ZH / EN
  • Singapore | EN
  • Sri Lanka | EN
  • Tadzhikistan | EN
  • Taiwan - China | EN
  • Thailand | EN
  • Turkmenistan | EN
  • Uzbekistan | EN
  • Vietnam | EN
  • Afghanistan | EN
  • Algeria | FR / EN
  • Bahrain | EN
  • Benin | EN / FR
  • Botswana | EN
  • Burkina Faso | EN / FR
  • Egypt | EN / FR
  • Ghana | EN
  • Guinea | EN / FR
  • Guinea-Bissau | EN / PT / ES
  • Iran | EN
  • Iraq | EN
  • Israel | EN
  • Ivory Coast | FR / EN
  • Jordan | EN
  • Kenya | EN / FR
  • Kuwait | EN
  • Lebanon | EN
  • Lesotho | EN
  • Liberia | EN
  • Libya | EN
  • Malawi | EN
  • Mali | EN / FR
  • Morocco | FR / EN
  • Mozambique | EN
  • Namibia | EN
  • Oman | EN
  • Pakistan | EN
  • Qatar | EN
  • Saudi Arabia | EN
  • Senegal | EN / FR
  • Sierra Leone | EN
  • South Africa | EN / NL
  • Sudan | EN
  • Swaziland | EN
  • Syria | EN
  • Tanzania | EN
  • Togo | EN / FR
  • Tunisia | FR / EN
  • U.A.E | EN
  • Yemen | EN
  • Zambia | EN
  • Zimbabwe | EN

Welding of Geomembranes for Reservoirs and Fish Farms

Versatile and Sustainable

Plastic Welding Civil Engineering Reservoirs
COMET

Leaktightness is an extremely high priority when it comes to sealing systems for distribution reservoirs and fish farm tanks. For the most part, such sealing systems consist of HDPE, PP, PVC or TPO material. Welding must ensure that the material remains totally leaktight in the long term. Reliable tools, but ones which also enable welding to be carried out quickly and, therefore, economically, are needed here to safeguard the safety of the sealing system. The small, easy to handle GEOSTAR wedge welders and TWINNY hot air welders adapt to the surface topography perfectly and weld the plastic geomembranes safely, making them leaktight for the long term. Vertical and horizontal work can be performed on walls too with the lightweight and flexible TRIAC DRIVE AT semi-automatic welding machine. Leister offers a wide range of hand extruders and hand welding tools, together with matching accessories, for welding connections and details.

 

  • Overlap welding of thermoplastic geomembranes on various surfaces 
  • Welding of connections and details

 

Leister has the solution
Leister offers various hot-wedge and combi-wedge machines for welding HDPE, PP, PVC or TPO materials. A broad spectrum of hand extruders and hand welding tools completes the range. 

 

  • Machines for the efficient welding of overlap seams, with or without a test channel
  • Hand extruders for the welding of connections and details
  • Wide range of hand welding tools and accessories

Combi-wedge Welders

TWINNY T

The TWINNY T is excellent for welding PVC and other thin or soft membranes.

TWINNY T Combi-wedge welder

TWINNY S

This lightweight tool TWINNY S is optimized for overhead welding and is ideal for thin materials used in civil engineering and tunnel construction.

TWINNY S Combi-wedge welder

TWINNY T USB

TWINNY T USB makes data storage and is excellent for welding PVC and other thin or soft membranes.

TWINNY T USB Combi-wedge welder

Hot-wedge Welders

COMET

The small powerhouse, COMET, is specially designed for the demands of landfill sites, mines and tunnels.

COMET Hot-wedge welder

GEOSTAR G5/G5 LQS

The super-fast and flexible all-rounder with many accessories welds practically every type of plastic while itself weighing only 16.4 kg / 36 lbs.

Leister Heizkeil-Schweissautomat GEOSTAR G5/G7

GEOSTAR G7/G7 LQS

The workhorse. The undefeated champion in its weight class (17.7 kg / 39 lbs.) With extra amounts of driving force and large welding wedge (130 x 50 mm).

Leister hot-wedge welder GEOSTAR G7

COMET USB

COMET USB's memory system is designed for use on construction sites, because this compact, hot-wedge welding machine records all relevant welding parameters.

COMET USB Hot-wedge welder

Semiautomatic hot-air tools

TRIAC DRIVE AT

The TRIAC DRIVE AT are up to three times faster than manual welding. The unique, semiautomatic welding tool.

hot-air welder TRIAC DRIVE AT

Extrusion welders

WELDPLAST S2

The WELDPLAST S2 is a compact, ergonomically designed workhorse. The handy size extrurusion welder puts out two kilograms per hour without difficulty.

WELDPLAST S2 Extrusion welder

WELDPLAST S2 PVC

The WELSDPLAST S2 PVC has integrated corrosion protection and has been especially designed to satisfy the high requirements of PVC extrusion welding.

Hand-Extruder WELDPLAST S2 PVC

FUSION 2

The FUSION 2 convinces with its ergonomic design. The simple operation and first-class welding quality have helped it to become the breakthrough product.

FUSION 2 - Air heated extrusion welder

FUSION 3C

The somewhat shorter FUSION 3C provides an astounding output volume of up to 3.6 kilograms per hour.

FUSION 3 C Extrusion welder

FUSION 3

With its long and narrow shape, the FUSION 3 enables comfortable work, even on the floor.

FUSION 3 Extrusion welder

Hot-air hand tools

TRIAC AT

The TRIAC AT is an intelligent hot-air hand tool for welding and shrinking plastics that is suitable for on-site use.

Leister TRIAC AT Heissluft Handgerät

TRIAC ST

Handiness, reliability and versatility are the key arguments in favor of the TRIAC ST

Leister Hot-air Handtool TRIAC ST

Testing instruments

EXAMO USB

EXAMO USB performs tests at the construction site – quick, reliable and uncomplicated.

EXAMO Testing instrument

COUPON CUTTER

Robust weld test cutter for use in civil engineering.

Leister Testing instruments Coupon Cutter

Test needle

Air pressure test manometer used in civil engineering for proving the tightness of double welding seams.

Leister Air pressure test manometer

Test needle (tapered)

Air pressure test manometer used in civil engineering for proving the tightness of double welding seams.

Leister Air pressure test manometer tapered

VACUUM BELL

Testing bell for proving the tightness of double overlap welding seams in civil engineering

VACUUM BELL

VACUUM BOX

Weld seam testing made quick and simple

VACUUM BOX

VACUUM PUMP

Pump to generate a vacuum in the VACUUM BOX

Leister Vacuumpump

Automatic Welders

TRIAC DRIVE ST

More consistent and up to three times faster than manual welding with the TRIAC DRIVE ST.

TRIAC Drive ST

Item added to watchlist